March 2022

New paper out! Together with his colleagues, Bernd developed a censored mixture model to model risk taking. With this model, they aimed to tackle difficulties that often arise when modeling risk taking, specifically focusing on censored observations, attractiveness to certain outcomes, and unobserved individual risk preferences. Their paper was published in Psychometrika. Congratulations!

December 2021  

We are very happy to announce that on November 26, Iris succesfully defended her PhD thesis titled “The role of time ambiguity in intertemporal choice”. Iris’ work over the past years has resulted in an impressive dissertation, which she defended brilliantly. Congratulations Dr. Ikink, we are very proud of you!

December 2021  

New paper out! Johannes and his colleagues investigated the neural mechanisms by which people selectively rely on motivational action biases (i.e., the tendency to invigorate actions when there is a prospect of reward, but to hold back when there is a threat of punishments) when they are helpful, and suppress them when they are not helpful. Their findings point to a dual nature of midfrontal theta power, with early components reflecting valence processing in the ventromedial prefrontal cortex and late components reflecting motivation for action in the striatum. The paper has been published in Cerebral Cortex. Congratulations!

October 2021 

New paper out! Julian, Bernd, and their colleagues studied the nature of confidence in value-based decisions. Through three preregistered experiments, they provide support for the hypothesis that the feeling of confidence reflects the variation of an underlying value distribution and that this value distribution represents previously experienced values related to an object. Their paper has been published in Journal of Experimental Psychology: General. Congratulations!

August 2021

We are happy to announce that our two Davids, David Renjaän and David Esmeijer, have successfully completed and defended their master’s thesis, and have hereby graduated from the Research Master Behavioural Science. Congratulations to both!

June 2021

New paper out! Felix, Leslie, Bernd, and colleagues investigated how the threat-induced psychophysiological state of freezing is related to approach-avoidance decision-making. They developed a task in which participants made passive and active approach-avoidance decisions in the prospect of receiving varying amounts of money and electrical shocks. They observed that choice behaviour was best predicted by a model that included not only the effect of the potential outcomes, but also participants’ psychophysiological state (bradycardia), and passive-active response tendencies. Their paper was published in Scientific Reports. Congratulations!

April 2021

New paper out! In this paper, Felix, Leslie, and their fellow researchers from the Dare2Approach Group discuss the literature on the potential role of threat-induced bodily states on decision-making, and provide a new neurocomputational framework explaining how these effects can facilitate or bias approach-avoid decisions under threat. Their paper was published in Frontiers in Neuroscience. Congrats all!

March 2021

New paper out! Bernd and several researchers from New York State Psychiatric Institute and Columbia University found that adolescents with a family history of substance use disorder (SUD) showed greater impatience in a delay discounting task compared to adolescents without a family history of SUD, specifically when the sooner-smaller reward was available immediately. However, no differences in associated brain activity between the two groups were found. Their paper was published in Developmental Cognitive Neuroscience. Congratulations!

January 2021 

New paper out! Bernd worked with Anneloes Hulsman, Reinoud Kaldewaij, Mahur Hashemi, Wei Zhang, Saskia Koch, Karin Roelofs, and Floris Klumpers to develop a novel Fearful Avoidance Task (FAT) in order to study individual differences in costly fearful avoidance and the relation with psychophysiology. Their paper was published in Behaviour Research and Therapy. Congratulations!

November 2020

During the PhD days of the Behavioural Science Institute, Floor received the annual BSI preregistration award for her MSc thesis preregistration on Pavlovian-to-Instrumental Transfer in intertemporal choice. Congratulations Floor!

September 2020

A warm welcome to Mingqian Guo and David Renjaän! Mingqian will be starting his PhD project, and David will carry out his Master’s thesis project in our lab.

Furthermore, we are happy to announce that after doing her Master’s thesis project in our lab last year, Floor Burghoorn will now continue to work in our lab as a PhD student.

July 2020
After working on it for quite a while, we proudly present version 1.0.0 of our SOP for Using Mixed-Effects Models. In the SOP, we elaborate on how we proceed when analyzing data with Mixed-Effects Models, for example, what we deem good practices when powering, fitting and interpreting Mixed-Effects Models. We hope that this document may be of help to those who find it difficult to follow a principled approach when working with Mixed-Effects Models and serve as a guide on the journey from data-collection planning to the interpretation of results.

October 2019
Iris is presenting her poster at the SNE (Society for NeuroEconomics) conference in Dublin –> Oct 6, poster session 3, poster 3-I-37

September 2017
A warm welcome to Lena, Liis, Edwin, Leon and Julian who are extending our labgroup during their Master’s/PhD project.

July 2017
PhD position awarded! We congratulate Johannes who got awarded a PhD position in the Learning and Decision-Making group directed by Hanneke den Ouden at the Donders Centre for Cognition in Nijmegen. For the next four years, he will be working on how humans arbitrate whether to use model-based or model-free learning, and how this arbitration is changed in patients with psychiatric disorders.

July 2017
PhD position awarded! We congratulate Niels who got awarded a PhD position.

June 2017
Two of our labmembers received an award for their master-thesis at the annual BSI day. Jesse Fenneman has received the first price for his thesis on impulsivity in harsh and uncertain environments, and Vivian Heuvelmans has received the third price for her thesis on pavlovian influences in intertemporal decision making. Congratulations!

June 2017
We welcome Nicole Wasalek to our labgroup! She will start as a PhD candidate in september 2017. During her project, she will develop mathematical models and learning algorithms to understand how changing environments shape the development of sensitive periods throughout the lifespan of an individual.